EP0206495A1 - Improvements in solenoid-operated fluid flow control valve means - Google Patents

Improvements in solenoid-operated fluid flow control valve means Download PDF

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Publication number
EP0206495A1
EP0206495A1 EP86303647A EP86303647A EP0206495A1 EP 0206495 A1 EP0206495 A1 EP 0206495A1 EP 86303647 A EP86303647 A EP 86303647A EP 86303647 A EP86303647 A EP 86303647A EP 0206495 A1 EP0206495 A1 EP 0206495A1
Authority
EP
European Patent Office
Prior art keywords
solenoid
armature
fluid flow
flow control
seat
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP86303647A
Other languages
German (de)
French (fr)
Inventor
John Patrick Bayliss
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ZF International UK Ltd
Original Assignee
Lucas Industries Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Lucas Industries Ltd filed Critical Lucas Industries Ltd
Publication of EP0206495A1 publication Critical patent/EP0206495A1/en
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
    • B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
    • B60T13/66—Electrical control in fluid-pressure brake systems
    • B60T13/68—Electrical control in fluid-pressure brake systems by electrically-controlled valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic

Definitions

  • This invention relates to solenoid-operated fluid flow control valve means of the kind comprising a housing having two fluid flow ports connected by a fluid chamber, a valve member for controlling fluid flow between the ports, a solenoid and an armature operated by the solenoid, with the armature controlling the valve member.
  • Valve means of the kind set forth are often complex and expensive to produce.
  • the aim of the present invention is to provide a valve means which is simple and cheap to produce, as well as being efficient in operation.
  • the armature floats in the fluid chamber and carries the valve member, and a sealing means between the solenoid and the fluid chamber includes a non-magnetic member, which separates the solenoid from the fluid chamber, and separates the solenoid from the armature, and acts as an abutment for an armature spring.
  • sealing means to separate the solenoid from the fluid chamber is advantageous, and the provision of the non-magnetic member as part of the sealing means is particularly useful.
  • the non-magnetic member acts as a spacer between the solenoid and the armature. This, as is well-known, improves the drop-out time of the armature, that is, the response of the armature to de-energisation of the solenoid.
  • the use of the member as an abutment for a spring biassing a floating armature also simplifies the construction of the valve means.
  • the provision of the non-magnetic member results in a valve means which is efficient in operation and has a simple construction, so is cheap to produce.
  • the valve member may also be arranged to simplify the construction of the valve means.
  • the valve member co-operates with a valve seat formed on one of the ports in order to control fluid flow.
  • the seat is preferably formed on the outlet port, and the valve member is urged into engagement with the seat by a spring force and the fluid pressure, and is moved away from the seat by operation of the solenoid.
  • the spring force is provided by the armature spring, which is a light spring acting between the non-magnetic member and the armature.
  • the armature comprises an annular disc member, with the valve member comprising a ball located in the central hole of the disc member.
  • the valve seat may be formed on an insert in the housing.
  • the non-magnetic member comprises a stainless steel shim, with the sealing means completed by a rubber 0-ring.
  • the valve means is suitable for use with liquids or with gases.
  • the valve means shown in the Figure generally comprises a housing 1 having an inlet port 2 and an outlet port 3 connected by a fluid chamber 4, a valve member 5 for controlling fluid flow between the ports, a solenoid 6 and an armature 7 operated by the solenoid 6, with the armature 7 controlling movement of the valve member 5.
  • the valve means is also provided with a sealing means 8 which includes a non-magnetic member 9 which serves to separate the solenoid 6 from the fluid chamber 4 and from the armature 7.
  • the housing 1 is of non-magnetic material, such as aluminium, and has a main part 10, and covers 11, 12, with a seal 13 provided between the main part 10 and the cover 11.
  • the solenoid 6 is located in the main part 10 of the housing, and comprises a soft iron core 14, and a coil 15.
  • the core 14 is formed in two parts.
  • the first part comprises a circular plate 16 from which projects a central post 17 which engages the non-magnetic member 9.
  • the coil 15 is wound round the post 17.
  • the second part comprises an annular member 18 surrounding the coil 15, and an annular flange 19 which also engages the member 9.
  • An insulating block 20 is attached to the circular plate 16 by pins 21, and has an upstanding projection 22 provided with a pair of terminal pins 23.
  • Solenoid leads 24 pass through slots in the plate 16 and the block 20, and are attached to the terminal pins 23.
  • the terminal pins 23 are also connected to electrical control leads 25, which are carried by a second insulating block 26 and a connector 27 at the top of the housing.
  • the solenoid 6 is sealed from the chamber 4 by the sealing means 8, which comprises a rubber O-ring 28 and the member 9.
  • the member 9 is an imperforate stainless steel disc, which also separates the solenoid 6 from the armature 7. It therefore acts as a spacer, which ensures that the armature 7 responds rapidly to de-energisation of the solenoid 6.
  • the armature 7 comprises an annular disc of magnetic iron, which is free to float in the fluid chamber 4.
  • the valve member 5 comprises a metal ball 29, which is pressed into the central hole 30 of the armature disc. This construction of the armature 7 and valve member 5 is small and light, which means that the armature 7 also responds rapidly to energisation of the solenoid 6.
  • the ball 29 cooperates with a valve seat 31 formed round the outlet port 3, which is provided on an insert 32 in the housing part 10.
  • a light armature spring 33 between the member 9 and the armature disc 7 biasses the ball 29 towards the valve seat 31.
  • the solenoid 6 In the position shown in the drawing the solenoid 6 is de-energised, and the valve member 5 is held in engagement with the valve seat 31 by the force in the spring 33 and the pressure of the fluid in the chamber 4, so that communication between the ports 2, 3 is cut off.
  • the solenoid 6 When the solenoid 6 is energised, the armature 7 is attracted to the solenoid 6, moving the valve member 5 away from the valve seat 31, and allowing fluid to flow from the inlet port 2 to the outlet port 3.
  • the solenoid 6 When the solenoid 6 is de-energised the fluid forces and the spring force move the armature 7 so that the valve member 5 engages the valve seat 31 again.
  • the valve member 5 is permitted to find its own position on the seat 31, with the armature disc 7 being free to move to accommodate this.
  • the valve means shown in the drawing has a number of advantages. Firstly, it has a simple construction, due primarily to the provision of the non-magnetic member 9 which acts not only as part of the sealing means 8, but also as a spacer, and a spring abutment. Secondly, it is relatively cheap to manufacture, because of its simple construction and the arrangement of the valve member 5. In particular, the arrangement of the valve member 5 so that it is self-seating means that it does not have to be guided accurately by the armature 7, so that there is no need for close guidance tolerances for the armature 7. Furthermore, the use of the ball 29 as the valve member reduces the tolerance variations on the valve member.
  • the only distances whose tolerances affect the movement of the armature 7 and valve member 5 are the distances Al - between the lower face 34 of the fluid chamber 4 and the member 9 - and A2 - between the face 34 and the valve seat 31. As there are only two of these, the armature 7 and the valve member 5 require no adjustment during assembly.
  • the armature 7 and the valve member 5 respond rapidly to operation of the solenoid 6, and in particular to its de-energisation. This is due principally to the non-magnetic member 9 acting as a spacer between the solenoid 6 and the armature 7, but is also aided by the fact that the armature and valve member are urged towards the seat 31 by fluid pressure forces.
  • valve means is suitable for use with liquids or gases, and the embodiment shown is designed for use in a pneumatic braking system. If the valve means is to be used in an hydraulic system operating at high pressure the annular space round the post 17 of the first core part will be filled with a ceramic or other non-magnetic filler to support the member 9.
  • the member 9 may be of any suitable non-magnetic composite or material instead of stainless steel.

Abstract

A solenoid-operated fluid flow control valve has a housing 1 with inlet and outlet ports 2, 3 connected by a fluid chamber 4, and a valve member 5 operated by the armature 7 of a solenoid 6 for controlling fluid flow between the ports 2, 3. A sealing means 8 is provided to seal the solenoid 6 from the fluid chamber 4, and includes a non-magnetic member 9 which separates the solenoid 6 from the fluid chamber 4 and from the armature 7. The member 9, which may be a stainless steel disc, simplifies the sealing means 8 andacts as a spacer to improve the drop-out time of the armature 7, as well as forming an abutment for an armature spring 33. The valve member 5 co-operates with a seat 31 on the outlet port 3, and is self-seating, being urged onto the seat 31 by the spring 33 and fluid pressure, and away from the seat 31 by the solenoid 6.

Description

  • This invention relates to solenoid-operated fluid flow control valve means of the kind comprising a housing having two fluid flow ports connected by a fluid chamber, a valve member for controlling fluid flow between the ports, a solenoid and an armature operated by the solenoid, with the armature controlling the valve member.
  • Valve means of the kind set forth are often complex and expensive to produce. The aim of the present invention is to provide a valve means which is simple and cheap to produce, as well as being efficient in operation.
  • According to our invention, in a solenoid-operated fluid flow control valve means of the kind set forth, the armature floats in the fluid chamber and carries the valve member, and a sealing means between the solenoid and the fluid chamber includes a non-magnetic member, which separates the solenoid from the fluid chamber, and separates the solenoid from the armature, and acts as an abutment for an armature spring.
  • The use of sealing means to separate the solenoid from the fluid chamber is advantageous, and the provision of the non-magnetic member as part of the sealing means is particularly useful. Firstly, because the member separates the solenoid from the armature, the sealing arrangement is simplified, as it does not have to accommodate movement of the armature. Secondly, the non-magnetic member acts as a spacer between the solenoid and the armature. This, as is well-known, improves the drop-out time of the armature, that is, the response of the armature to de-energisation of the solenoid. Thirdly, the use of the member as an abutment for a spring biassing a floating armature also simplifies the construction of the valve means. Thus the provision of the non-magnetic member results in a valve means which is efficient in operation and has a simple construction, so is cheap to produce.
  • The valve member may also be arranged to simplify the construction of the valve means. The valve member co-operates with a valve seat formed on one of the ports in order to control fluid flow. The seat is preferably formed on the outlet port, and the valve member is urged into engagement with the seat by a spring force and the fluid pressure, and is moved away from the seat by operation of the solenoid. With this arrangement the valve member can be permitted to find its own position on the valve seat, so that accurate guide surfaces are not required, which simplifies construction of the valve means. The spring force is provided by the armature spring, which is a light spring acting between the non-magnetic member and the armature. Conveniently, the armature comprises an annular disc member, with the valve member comprising a ball located in the central hole of the disc member. The valve seat may be formed on an insert in the housing.
  • Preferably the non-magnetic member comprises a stainless steel shim, with the sealing means completed by a rubber 0-ring.
  • The valve means is suitable for use with liquids or with gases.
  • An embodiment of our invention is illustrated in the single Figure of the accompanying drawings which shows a longitudinal section through a solenoid-operated fluid flow control valve means.
  • The valve means shown in the Figure generally comprises a housing 1 having an inlet port 2 and an outlet port 3 connected by a fluid chamber 4, a valve member 5 for controlling fluid flow between the ports, a solenoid 6 and an armature 7 operated by the solenoid 6, with the armature 7 controlling movement of the valve member 5. The valve means is also provided with a sealing means 8 which includes a non-magnetic member 9 which serves to separate the solenoid 6 from the fluid chamber 4 and from the armature 7.
  • The housing 1 is of non-magnetic material, such as aluminium, and has a main part 10, and covers 11, 12, with a seal 13 provided between the main part 10 and the cover 11. The solenoid 6 is located in the main part 10 of the housing, and comprises a soft iron core 14, and a coil 15. The core 14 is formed in two parts. The first part comprises a circular plate 16 from which projects a central post 17 which engages the non-magnetic member 9. The coil 15 is wound round the post 17. The second part comprises an annular member 18 surrounding the coil 15, and an annular flange 19 which also engages the member 9. An insulating block 20 is attached to the circular plate 16 by pins 21, and has an upstanding projection 22 provided with a pair of terminal pins 23. Solenoid leads 24 pass through slots in the plate 16 and the block 20, and are attached to the terminal pins 23. The terminal pins 23 are also connected to electrical control leads 25, which are carried by a second insulating block 26 and a connector 27 at the top of the housing.
  • The solenoid 6 is sealed from the chamber 4 by the sealing means 8, which comprises a rubber O-ring 28 and the member 9. The member 9 is an imperforate stainless steel disc, which also separates the solenoid 6 from the armature 7. It therefore acts as a spacer, which ensures that the armature 7 responds rapidly to de-energisation of the solenoid 6. The armature 7 comprises an annular disc of magnetic iron, which is free to float in the fluid chamber 4. The valve member 5 comprises a metal ball 29, which is pressed into the central hole 30 of the armature disc. This construction of the armature 7 and valve member 5 is small and light, which means that the armature 7 also responds rapidly to energisation of the solenoid 6. The ball 29 cooperates with a valve seat 31 formed round the outlet port 3, which is provided on an insert 32 in the housing part 10. A light armature spring 33 between the member 9 and the armature disc 7 biasses the ball 29 towards the valve seat 31.
  • In the position shown in the drawing the solenoid 6 is de-energised, and the valve member 5 is held in engagement with the valve seat 31 by the force in the spring 33 and the pressure of the fluid in the chamber 4, so that communication between the ports 2, 3 is cut off. When the solenoid 6 is energised, the armature 7 is attracted to the solenoid 6, moving the valve member 5 away from the valve seat 31, and allowing fluid to flow from the inlet port 2 to the outlet port 3. When the solenoid 6 is de-energised the fluid forces and the spring force move the armature 7 so that the valve member 5 engages the valve seat 31 again. The valve member 5 is permitted to find its own position on the seat 31, with the armature disc 7 being free to move to accommodate this.
  • The valve means shown in the drawing has a number of advantages. Firstly, it has a simple construction, due primarily to the provision of the non-magnetic member 9 which acts not only as part of the sealing means 8, but also as a spacer, and a spring abutment. Secondly, it is relatively cheap to manufacture, because of its simple construction and the arrangement of the valve member 5. In particular, the arrangement of the valve member 5 so that it is self-seating means that it does not have to be guided accurately by the armature 7, so that there is no need for close guidance tolerances for the armature 7. Furthermore, the use of the ball 29 as the valve member reduces the tolerance variations on the valve member. Thus in practice the only distances whose tolerances affect the movement of the armature 7 and valve member 5 are the distances Al - between the lower face 34 of the fluid chamber 4 and the member 9 - and A2 - between the face 34 and the valve seat 31. As there are only two of these, the armature 7 and the valve member 5 require no adjustment during assembly.
  • Thirdly, the armature 7 and the valve member 5 respond rapidly to operation of the solenoid 6, and in particular to its de-energisation. This is due principally to the non-magnetic member 9 acting as a spacer between the solenoid 6 and the armature 7, but is also aided by the fact that the armature and valve member are urged towards the seat 31 by fluid pressure forces.
  • Finally, it will be noted that the range of movement of the armature 7 and valve member 5 is quite small, and that the combined mass of these members is small. The kinetic energy generated by their movement as the valve closes, which has to be absorbed by the valve seat 31, is therefore also quite small. This means that the valve seat 31 will not wear rapidly, so that the valve means has a prolonged life.
  • The valve means is suitable for use with liquids or gases, and the embodiment shown is designed for use in a pneumatic braking system. If the valve means is to be used in an hydraulic system operating at high pressure the annular space round the post 17 of the first core part will be filled with a ceramic or other non-magnetic filler to support the member 9.
  • In a further modification (not shown), the member 9 may be of any suitable non-magnetic composite or material instead of stainless steel.

Claims (6)

1. A solenoid-operated fluid flow control valve means comprising a housing (1) having two fluid flow ports (2, 3) connected by a fluid chamber (4), a valve member (5) for controlling fluid flow between the ports, a solenoid (6) and an armature (7) controlling the valve member (5) and operated by the solenoid (6), characterised in that the armature (7) floats in the fluid chamber (4) and carries the valve member (5), and a sealing means (8) between the solenoid (6) and the fluid chamber (4) includes a non-magnetic member (9) which separates the solenoid (6) from the fluid chamber (4), and separates the solenoid (6) from the armature (7), and acts as an abutment for an armature spring (33).
2. A solenoid-operated fluid flow control valve means according to claim 1, characterised in that the valve member (5) cooperates with a seat (31) formed on the outlet port (3), the valve member (5) being urged into engagement with the seat (31) by a spring force and the fluid pressure, and moved away from the seat (31) by operation of the solenoid (6).
3. A solenoid-operated fluid flow control valve means according to claim 2, characterised in that the spring force is provided by the armature spring (33).
4. A solenoid-operated fluid flow control valve means according to any preceding claim, characterised in that the armature (7) comprises an annular disc member, and the valve member (5) comprises a ball (29) located in the central hole (30) of the disc member.
5. A solenoid-operated fluid flow control valve means according to any of claims 2 to 4, characterised in that the valve seat (31) is formed on an insert (32) in the housing (1).
6. A solenoid-operated fluid flow control valve means according to any preceding claim, characterised in that the non-magnetic member comprises a stainless steel shim (9), with the sealing means (8) completed by a rubber O-ring (28).
EP86303647A 1985-05-18 1986-05-14 Improvements in solenoid-operated fluid flow control valve means Withdrawn EP0206495A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB858512609A GB8512609D0 (en) 1985-05-18 1985-05-18 Solenoid operated fluid flow control valve means
GB8512609 1985-05-18

Publications (1)

Publication Number Publication Date
EP0206495A1 true EP0206495A1 (en) 1986-12-30

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Application Number Title Priority Date Filing Date
EP86303647A Withdrawn EP0206495A1 (en) 1985-05-18 1986-05-14 Improvements in solenoid-operated fluid flow control valve means

Country Status (7)

Country Link
EP (1) EP0206495A1 (en)
JP (1) JPS61290286A (en)
KR (1) KR860009261A (en)
AU (1) AU5742586A (en)
CS (1) CS262436B2 (en)
ES (1) ES8703598A1 (en)
GB (2) GB8512609D0 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1991010583A1 (en) * 1990-01-16 1991-07-25 Robert Bosch Gmbh Assembly unit comprising a valve block aggregate and a control device

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH071565Y2 (en) * 1990-06-27 1995-01-18 リンナイ株式会社 solenoid valve

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1284227B (en) * 1966-10-20 1968-11-28 Herion Erich Solenoid valve
AT291699B (en) * 1968-06-19 1971-07-26 Danfoss As Solenoid valve with flat armature
US3677826A (en) * 1970-01-04 1972-07-18 Rene Pointout Three-way solenoid-operated valves
DE2513630A1 (en) * 1974-04-02 1975-10-09 Expert Ind Controls Ltd CONTROL VALVE FOR FLOWING MEDIA
DE2445493A1 (en) * 1974-09-24 1976-04-01 Buschjost Kg Fr Solenoid pilot valve with three way function - has steel ball operated by magnetic force as valve shuttle
DE2948874A1 (en) * 1979-12-05 1981-06-11 Robert Bosch Gmbh, 7000 Stuttgart ELECTROMAGNETICALLY ACTUABLE VALVE
US4344603A (en) * 1979-08-31 1982-08-17 Kuroda Precision Industries Ltd. Electromagnetic valve apparatus with a hand-operated transfer device
DE3207919A1 (en) * 1982-03-05 1983-09-15 Robert Bosch Gmbh, 7000 Stuttgart ELECTROMAGNETICALLY ACTUABLE VALVE

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB745977A (en) * 1954-01-21 1956-03-07 J & E Hall Ltd Improvements in expansion valves for refrigeration plants
GB823105A (en) * 1957-01-29 1959-11-04 Hays Mfg Co Improvements in valves controlling fluid flow
CH424407A (en) * 1965-05-03 1966-11-15 Huber & Cie Ag J Liquid valve with electromagnetic actuation
US3512749A (en) * 1968-03-13 1970-05-19 American Standard Inc Pilot operated valve
BE792109A (en) * 1971-12-02 1973-03-16 Rohe Scientific Corp ZERO DISPLACEMENT DIAPHRAGM VALVE
US3929315A (en) * 1974-07-25 1975-12-30 Stewart Warner Corp Solenoid valve assembly
JPS5312251B2 (en) * 1974-12-17 1978-04-27
US3960361A (en) * 1975-03-14 1976-06-01 Bertea Corporation Solenoid valve
DE2936853A1 (en) * 1979-09-12 1981-04-02 Robert Bosch Gmbh, 7000 Stuttgart ELECTROMAGNETICALLY ACTUABLE VALVE
DE3230844A1 (en) * 1982-08-19 1984-02-23 Robert Bosch Gmbh, 7000 Stuttgart ELECTROMAGNETICALLY ACTUABLE VALVE
IL69612A (en) * 1982-09-07 1991-04-15 Greatbatch Enterprises Inc Low power electromagnetic valve particularly for implantations

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1284227B (en) * 1966-10-20 1968-11-28 Herion Erich Solenoid valve
AT291699B (en) * 1968-06-19 1971-07-26 Danfoss As Solenoid valve with flat armature
US3677826A (en) * 1970-01-04 1972-07-18 Rene Pointout Three-way solenoid-operated valves
DE2513630A1 (en) * 1974-04-02 1975-10-09 Expert Ind Controls Ltd CONTROL VALVE FOR FLOWING MEDIA
DE2445493A1 (en) * 1974-09-24 1976-04-01 Buschjost Kg Fr Solenoid pilot valve with three way function - has steel ball operated by magnetic force as valve shuttle
US4344603A (en) * 1979-08-31 1982-08-17 Kuroda Precision Industries Ltd. Electromagnetic valve apparatus with a hand-operated transfer device
DE2948874A1 (en) * 1979-12-05 1981-06-11 Robert Bosch Gmbh, 7000 Stuttgart ELECTROMAGNETICALLY ACTUABLE VALVE
DE3207919A1 (en) * 1982-03-05 1983-09-15 Robert Bosch Gmbh, 7000 Stuttgart ELECTROMAGNETICALLY ACTUABLE VALVE

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1991010583A1 (en) * 1990-01-16 1991-07-25 Robert Bosch Gmbh Assembly unit comprising a valve block aggregate and a control device

Also Published As

Publication number Publication date
GB8611827D0 (en) 1986-06-25
ES555073A0 (en) 1987-02-16
ES8703598A1 (en) 1987-02-16
GB8512609D0 (en) 1985-06-19
CS262436B2 (en) 1989-03-14
CS360886A2 (en) 1988-07-15
AU5742586A (en) 1986-11-27
KR860009261A (en) 1986-12-22
GB2175373A (en) 1986-11-26
JPS61290286A (en) 1986-12-20
GB2175373B (en) 1989-02-22

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